题目内容
脱式计算,能简算的要简算。
|
(1)原式=3.8+6.2+(5.46+4.54) =10+10 =20 |
(2)原式=25.75×4.2 =108.15 |
(3)原式=(10+0.1)×13 =130+1.3 =131.3 |
(4)原式=0.28×(12.5-2.5) =0.28×10 =2.8 |
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题目内容
脱式计算,能简算的要简算。
|
(1)原式=3.8+6.2+(5.46+4.54) =10+10 =20 |
(2)原式=25.75×4.2 =108.15 |
(3)原式=(10+0.1)×13 =130+1.3 =131.3 |
(4)原式=0.28×(12.5-2.5) =0.28×10 =2.8 |